When I delete all content of the interface panel and send the "empty" panel to the robot, the old content will not be deleted.
I exported the "empty" panel - and the file is really empty
Then I edited the AS sourcecode in KIDE:
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.INTER_PANEL_D
.END
.INTER_PANEL_TITLE
"",0
"",0
"",0
"",0
"",0
"",0
"",0
"",0
.END
.INTER_PANEL_COLOR_D
182,3,224,244,28,159,252,255,251,255,0,31,2,241,52,219,
.END
But after transfer everything with "send AS file to the robot" - the robot still has the old panel content.
After downloading a backup form the robot - I saw that the whole INTER_PANEL section was not overwritten.
It's not a big problem ... I just created an unused pilot lamp on the last page - then all the other content can be deleted.